Lightweight versatility. The BUFF Original EcoStretch a multifunctional neckwear piece designed for runners and outdoor athletes who want a simple, reliable and comfortable layer for any activity. It protects against sun, wind and cold with a soft, elastic and fully recycled fabric. Key Features Sun Protection: UPF 50 certified fabric provides very high protection against UV rays. Ultra-Stretch & Seamless: Four-way stretch and a seamless tubular construction deliver a smooth, irritation-free fit. Recycled Fabric: Made with approximately 95% recycled polyester and 5% elastane for a lightweight, breathable and sustainable performance. Multifunctional Use: Wear it in over 10 different ways — neck warmer, headband, face cover, bandana, under-helmet layer — adapting to any season or training session. At Temple Running Girona, we recommend this neckwear as an everyday essential for running, training, and active lifestyles.